238 / 582
For instance :The injector liner
1
2
3
4
Mintes
-0.4
0.0
0.5
1.0
1.5
2.0
2.5
mVolts
SS liner
COS
methylmercaptan
H
2
S
Sulfur compounds
disappear
Sulfur co pounds
disappear
30m x 0.32mm thickfilmPDMS
Injection :7.5 µl loop
Conc.
:10ppm, Split: 1:10
Detection :PFPD
30m x 0.32mm thickfilmPDMS
Injection :7.5 µl loop
Conc.
:10ppm, Split: 1:10
Detection :PFPD
1
2
3
4
Minutes
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
mVolts
Siltek liner
CH
3
-S-H
H
2
S
COS
Sulfur compounds
Appear..
Sulfur co pounds
Appear..
Rt-XL Sulfur : Sulfurs and Hydrocarbon Analysis of
Natural Gas / Refinery Gas at 50 ppb level
1.
hydrogen sulfide
2.
carbonyl sulfide
3.
methyl mercaptan
4.
ethyl mercaptan
5.
dimethyl sulfide
6.
dimethyl disulfide
A.
methane
B.
ethane
C.
propylene
D.
propane
E.
isobutane
F.
butane
G.
isopentane
H.
pentane
I.
hexane
Column :Rt-XLSulfur,Siltek treatedMicropacked, 1m x0.75mm
Detection : FPD / FID
Oven
:60C to230C @ 15C/min
Carrier
: He, 9ml/min
Sample : 1ml sample loop
Components: 50ppb each
Trace H2S and COS in Ethylene/Propylene using
Selective Detection
20 ppb H2S and COS in ethylene
H
2
S COS
Column :Rt-XLSulfur,Micropacked,
Detection : sulfur selectivedetector
20 ppb COS in propylene
Impact of large matrix peak on
detector signal..
COS